Pan-motion concentrating-table.



K. SENN.

PAN MOTION CONGENTEATING TABLE.

V APPLICATION FILED DEC. 29, 1911.

Patented Mar. 18, 1913.

K. SBNN.

PAN MOTION GONGENTRATING TABLE.

APPLICATION FILED DEC. 29, 1911.

Patented Mar.18,191 3 K. SENN.

PAN MOTION CONGENTEATING TABLE.

APPLIOATION FILED DEC. 29, 1911'.

Patentd Mar.18, 1 913.

3 SHBETS-SEEET 3.

UNITED STATES PATENT OFFICE.

KARL SENN, or ALAMEDA CALIFORNIA.

PAN-MOTION CONCENTRATINGr-TABLE.

Specification of Letters Patent.

Patented Mar. 18, 1913.

Application filed December 29, 1911. Serial No. 668,575.

To (ZZZ 'uhom 2'2 may concern. 1

Be it known that I. KARI. SnNN, a citizen of the United States, residing at Alameda, in the county of Alameda and State of California, have invented new and useful Iniprovements in Pan-Motion Concentrating- Tables. of which the following is a specification.

This invention relates to concentrating machinery, and particularly to an apparatus" for concentrating mbterials according to their specific gravities; ,the apparatus includinga table having a pan motion.

-Many forms of mineral concentrators have been provided in which some portion of the apparatus is given a reciprocating, oscillating or other vibratory movement, the effect of which is to segregate the'components of -a mechanism capable of transmitting to the -tablea movementof suflicient amplitude to amply segregate the several constituents of the ore, and which apparatus is also provided for the purpose of greatly reducing the necessary floor area for a machine of certain capacity; and to further provide a. concentrating table, the ore carrying part of which is given such a peculiar movement that in a given lengt-h of time the ore particles are compelled to travel a distance far greater than atpicsent possible by machines now in use.

The invention consists of. the parts and the construction and combination of parts as hereinafter more fully described. and claimed, having reference to the accompanying drawings, 1n which- Figure 1 is a plan view of the improved table. Fig. 2 is a side elevation of the same. Fig. 3 is an enlarged detail view of the table actuating mechanism. Fig. 4 is a diagram representing a movement of the concentrate in one cycle of the table movement. Fig. 5 is a diagram represent-ing the path of movement of the table in one cycle. Fig. ,(i

is a sectional de ail of the table adiustii'g device. p I

Inthe illustrated embodiment of my invention, 2 represents a table of suitable proportions, the upper surface of which may be provided with rittles 3. The table is here shown as flexibly connected to and supported above a transversely movable frame 4 by The table 2 is adapted to have a longitudinal movement relativeto the frame 4; this. movement being permitted by the swinging of the links 5 upon the pivots 8 of the frame 1. The frame 4, which may be of suitable design and proportions, is supported for transverse oscillation by suitable suspending links 10, the upper ends of which are mounted upon supporting shafts or pivots 11 i which are provided in uprights 12 on each side of the front and rear ends of the frame 4. The lower ends of the suspending. links 10 are mounted upon pivots or shafts 13 in suitable brackets or bearings 14 on the frame 4. i

The table-carrying frame 4 is adapted to have a lateral or transverse reciprocatory movement which is imparted thereto by connecting. rods 15, suitably connected to the table 2. The outer ends of the connect ing rods 15 are mounted upon eccentricsZlG which are appropriately secured upon driving shaft 17 mounted in appropriate bearings 18 on the standards 12 on one side of the apparatus. Power is transmitted to the shaft 17 from any suitable source of power by means of a suitable driving member on pulley 19 secured on the shaft. \Vhen the shaft 17 is in operation, the eccentrics 16, which may be designed to give a desired lateral stroke to the frame 4, (and in practice it has been found that a 11 inch total side shake is sufiicicnt) and the superposed table 2 will all be simultaneously shifted laterally and return to the starting point at a complete revolution of the eccentrics 16.

For the purpose of transmittingto the table 2 a longitudinal, rec-iprocatory'movement, there is mounted upon the shaft 17 a crank or eccentric which is connected for universal movement by the link 21, the up'- per end of whiclr is connected by a ball joint 22 to a lever 23secured upon the transverse hit shaft 24:. The shaft 52st is mounted in suitable hearings at the ends of the frame t, and by reason of the universal joints by which the link :1 is connected to the crank 20 and the arm 23, the lateral movement of the table trame 4t is not interfered with by the rotation ot the crank 20 and the oscillation 0 the rocker-shaft 2st.

ill a suitable location on the rockenshattt et is secured a rocker-arm or lever 25 which has one end connected to a link 26 extending toward the table 9 and slidable through a. bearing 27 fastened thereon. 'lhe link 36, which connected to the lever arm 25 by a pivot or stud 28, is of sntlicient length to project well past'thc hearing 27. The pro-- jecting portion is surrounded by an expansible spring 29 reacting against an adjustable nut or other device 30 at the end of the link 26.

ll'hen the sha t't ii is rot atingg, a side shake is given to tahle-supporting tranie land at the same time the crank 20 oscillates the rocker-shaft 24, which in turn, by means of its connection. 26, will more the tahle 2 endwise, the operation being that when the lcver arm 95 moves forward it pulls on the link 26, resisted by the spring 29 interposed hetween the device 30 on the end of the link 96 and the hearing 27 against which the spring 29 reacts; the pull on the link 26 moving; the table 2 forwardly until it is in te 'rupted in its forward movement by the engagement of a device 1. here represented as a roller mounted in the hearing 27 at the "forward end of the frame The roller Ell in moving torward approaches and abut-s a fixed and rigid butter :39. which may be of yieldable material, rubber. which is supported in a transverse beam 33 rigidly connected to the standards 12 at. the forward end of the apparatus.

lllanitestly any desired amount of torward and return movement may he imparted to the table 2. it is tound in practice that an endwisc movement of .1} inches is ample and sutlicient to produce the desired concentration of the pulp or ores flowing on the surface of the table 2. It will thus be seen that the table 2 is given an endwise inoveu'ient reason of its connection with the rocker-shaft 2 t and the carrying-frame l is given a side shakeby reason of its connection with the shaft 17 through means of the connecting or eccentric rods 15 and the eccentrics 16. ill the side shake is adjusted to equal 14 inches and the end shake of the table 2 is equal to inches, then it the parts 2 and l be adjusted in a given position or relation, every part of the table will move in a perfect circle of 1% inches diameter, Preferably the par s are so arranged, relatively, that when the table 2 is in the center oi. its sidewise movement, at

which time the eccentric 16 will be at its 2, and the forward increment of the and crank 20, vertically, above the cel'lter ot again from the maximum side lTlOVPtlllZllt lowermost point of revolution below the shaft 17, the table 2 will be at the rearmost point of its endwise moveiner i and the crank 30 will be at its lowermost point of rotation relative to shaft 17. lhen when the shatt revolves, as indicated by the arrow, Fig. 2, the trame 4 and its superposed table 2 will move simultaneously in the direction indicated at b in the diagram, rig. 4r.

While the eccentric 16 is moving from its lowermost to its uppermost position, relative to the shaft 1?, representing a haltrerolution ot the latter, 'the table-carrying t'ranie l and the table 2 will have started from and returned to the center of their side shake while the rocker-shaft 24-. will have been oscillated by the one half revolution of the shaft 1'? the crank 20 moves from its lowermost to its uppermost point. of revolution relative to the shaft l7. This upward movement oi the crank 20 oscillates the mckenshatt 27k so that: the link 26 will pull the table 2 forwardly the desired distance.

The combined side movement, beginning; at the central point of the frame 4 and table 1 table 2 results in giving to the latter a movement closely approximaling a true semicirc heginning at the rearniost point of mm :tent l 5 of :he table and swinging sidewisc and forwardly during the half revolution of the shaft l? which will swing the eccentric 1o the shaft. Further continued rerolulion the halt 17 turns the eccentric ill on the other hail of revolulh n o that the r carrying frame is ried 7. center position to the opposs'e side of lllrlkllllllll'l movement and back again. Meanwhile the downward travel ol' the crank 20 tor the niainingz ha] {5 0t rcvolu lion will oscillate the rocker-shaft to :l'orce the link 28 rearward, when, by reason of the engageiil l; of an adjustable not: 536 the tahle 2 w, forced backward 7 During one complete resolution oi the shaft 17 and the eccentrics 16 the will be moved from a central position, la erally, to one side ian inch, then l,

inches in the opposite direction, and return to the point of star represen the center of movement, of the table intli cated, as at a, and 4. The combine side shake of the carry-frame t with the end shake of the super-pose table 2 results in imparting to the table 9 an approximately conr plete circular moiement during one 1'eVoln--. tion oi the shaft 17. This movement alone given to the .table would not efficiently sel arate or feed the concentratestrom the ore.

t ed toil the talole through eans of a d stributor 34, Fig. 2,7wh1ch is mounted alao e and tran erse the table 2 and connected o 139 anovement, the device or roller 31 will encounter the buffer 32, thus impeding further forward movement of the table 2, this being permitted without effecting the total movement of the link 26 by reason of the compression of the spring 29.

In actual practice, the table 2 is allowed to make an almost complete circular orbit without interference of the buffer 32,'but as the table 2 approaches its for-ward limit of movement the parts are so adjustable that the roller 31 will engage the buffer 32in sufficient time so that the side movement of the table 2 will cause the roller 31 to roll for a short. distance, indicated at 0, Fig. 5, on the buffer 32, In other words, the table insteadof having a true circular motion has a motion nearly circular with a straight line 0, Fig. 3, at one side which is produced at the end of the forward portion of the movement of the table.

The movement of the pulpgluring. the operationof the table is clearly indicated in Fig. 4 in which the semicircular, diagrammatic line (Z represents the forward and side movement, combined, of the table 2 reproducing a semic rcular path which terminates approx mate the forward limit of movement of the table when the roller 31 engages the buffer 32 and checks the movementof the table 2. This sudden checking of the tables forward motion causes the concentrated particles on the surface of the table to be projected forwardly due to their momentum while the table is traversing a straight path 0, Fig. 3. As the return movement of the table 2 starts and the roller 31 leaves the buffer 32, all of the heavy particles on the table will be carried back uniformly in the path 6, Fig. l, resting upon and moving with the table. It will be seen that by reason bf the substantial connections between the carrier or frame 4 and the table 2 that these members will move sidewise, uniformly, when. actu- -ated bythe eccentric 1G and that the supporting links 5 will permit the table 2 to move endwise relative 'to the frame 4 when actuated by thelink 26. The combined side shake and cndwise movement of the tablegive to the latter a movement whichis substantially circular throughout except at one portion which is slightly flattened; this being due to the abutment of the table roller 31 against the stationary buffer 32. \Vhile every point in the surface of the table 2 swings in v a substantially circular ward standards 12. I

orbit yet the path of travel through which a grain or particle of concentrate moves is represented in Fig. l by two oppositely disposed but diametrically offset semicircles. Thus practically all concentrate beginning its path at the end of the are (1 will be carried in a semicircular. line sidewise and forward simultaneously until the, table is abruptly stopped by reason of the engagement of its roller 31 with the stop structure 32, at which instant the forward momentum of the concentrates will cause their forward projection, indicated as at f, Fig. 4 At the time the rearward or return movement of the table 2 is started, the concentrates will have become inert and will be carried backwardly with the table in a path represented by the are c, Fig. 4, in which the point 5 represents the center position its side shake. i

One of the important features of this invention to which attention-is particularly called is that since every poiht 0n the sur-' face of the table 2 is carried substantially in a circle whose diameter is 1:; inches, all' of the pulp on the table is for each revolution of the shaft 17 carried in a path, the length of which is approximately equal to the circumference of the 1:} inch circle; whereas in contradistinction to many forms of concentrators now used, an endwise shake is imparted to the table; the movement of the particles being limited to the direct amount of throw or stroke ofthe table. Thus it will be-seen that I amenabled to use a comparatively short and narrow table and give to it a desired movement endwise and sidewise, the resulting line of which at every point produces substantially a curve, the length of which is approximately equal to the circumference of a circle of 1-1; inches in diameter. At, each forward reciprocation of the table 2 tlie mass of concentrates settling on its surface will be projected forwardly at the instant the table is abruptly stoppedin its forward. movement; the concentrates being projected at each movement of the table 2 relative a slight distance so that by the time'the .ore has settled upon the table the successive jolts incurred by the particles at the stopping of the table feeds the concentrates forwardly while the lighter portion of the pulp or material fed to the table is washed downwardly toward the rear of the table which is. shown as slightly inclined, being higher at its front end. -Vi ash water may be admitted to the apparatus through a suitable distributer attached to the f0r- It is wellknown that the loss of etliciency in reciprocating concentrators is largely due to the fact that particles of the concentrates known as fines are frequently coated with a sticky or sl1my substance, and unless these are washed from the mcluded parl'i cl as; will he cai'i'icd inolilgn ol the lacl'ci' causes the particles of (r011 12 i taicd and scmircd ihcicby removing thc slime ,fmin. the pai'ticlcs 0;? values. Once the ccnccnl'i'atcs 0}. valncsliavc been thoriughly clcanscd, due "[0 tic-i1 agitatinn by the nanann zion. of the table 'lhe particle will then her}; oj-cclcd fol-i d1 from riiile m lflllllf: by the constant joltnig of flu; table and finally di hargd from 'thc. forward .cnd intoa sui lc launder not shown.

'lhc inclination of the fable 2 in: 3 he '1 i'ied readily to suit ccniflitions h means of the links 10 at l'hc rear (31 low end of thc lalilc; these links being 'lhi-cadcd at their uppci: enda ai 10 and c1: ling through hubs '01 3 on the pivo'l's 13. The threaded ions '10" of lhe links 10 arc l0 WlllCll may Dif the lhi'cads 21 W1 7 nglncn inc cleadapied in iciccivc advanced 01' i'cccdc given amount in shn. pending portions of the lin 's 1G helow Qhe hubs 13. By this means an :cn'iclv carc- F111 and accui'ai'c adjustment 01 the slant 0f thc table may he prmflnccd.

l'l aving thus described my I claim and desire in secure by chit isl. The cmnhinaiion will. a cunccnhn mhlc. and supp-(iris upon which liT- is ,uOflbl-P of nim'cnicni in a single plane, 0i. ccce; c-lc shafh connca- Y and Lhc side the fable. a c

iniialc id rilp to he thoroughly linl ills iahlc havinr a ccnnlect lg n hlc,

zonlially usposcd al'ni iii; in the named Shaft anda link coin acting i'lie arm and the eccentric, v

Q. The ccinhination with a conccntrabing lablc and supports upon which it is capa. lc

of inovc'nicnt in a single plane, Of BCCQ11lTiCS upon a horizontally r-ev'oluhlc shafh cnnnec lions he'lnccn Iaid ccccn'uics and 'lhc aide the table, a shaft parallel with the h a, 0:

"(he tahlc having; a rockci' armand a hill: connecting said arm with the table; a ho; zonlally disposed ai'i'n filiCCl m ths and said shaft; an eccentric carried by lhc named shaft, and a link connecting the and the ce l-nitric, said link having; glchnlai sockets filling corresponding ends cgffllic crank and rook e arms .10 allow a horizcnlal circular movement of ihwtablc.

3. in a cnnccntminr, {idlOligZOIliiflllff sanporicd tablc capable of universal in a singlc plane a Sllilil with ccccniiics and rcclicr arms cnnncclicd l0 sininl'iancan y {c mate 'lj hc liable in a iraiisvcrsc-aiful inal s'lir acfion,whcichy cnar nim cincnt vin subs" nc is PlOlllllOEd, and

1 connccl'ed in act al. i;

nicircnlafi inov nicni an as i ace of (he pal; clca upon who! 

